Research on a kind of adaptive region backup power supply for high voltage power grid

The operation of the electromagnetic loop network of the 500kV and 220kV systems increases the short-circuit current level of the whole system and reduces the thermal stability limit, so it is very necessary to adopt the open-loop operation mode of the 220kV power grid. This paper presents an adaptive regional backup system, which can realize the functions of adaptive and remote backup system by collecting reasonable simulation criterion, setting up interval maintenance platen and transmitting information far away.